Figure 1

Solutions of (7) for different values of \(\sigma (1-\mu )\). Fig. 1(a) and Fig. 1(c) are the solutions for \((\kappa _{1},\kappa _{2},\kappa _{3},\kappa _{4})=(2,1,0.4,0.1)\) and \((1,1,0.9,0.8)\), respectively. Fig. 1(b) and Fig. 1(d) graphs indicate the solutions for \((1,1,1,0.8)\) and \((1,0.9,1,0.5)\), respectively. We see that the cyclic solution for these cases is cyclic